JPS61169587U - - Google Patents
Info
- Publication number
- JPS61169587U JPS61169587U JP5294785U JP5294785U JPS61169587U JP S61169587 U JPS61169587 U JP S61169587U JP 5294785 U JP5294785 U JP 5294785U JP 5294785 U JP5294785 U JP 5294785U JP S61169587 U JPS61169587 U JP S61169587U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- chamber
- hydraulic
- piston
- switching valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 2
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
第１図は、この考案の一実施例である液圧式打
撃機構の構成を示す縦断面図、第２図は、弁室付
近の拡大断面図である。
図中、１はシリンダ、２はピストン、３は前部
液圧室、４は後部液圧室、５は切換弁、６は高圧
回路、１０は低圧回路、１２はバルブプラグ、１
７は弁室、２３は弁制御液室、２５は弁規制液室
、２８，３６は制御ポートである。
FIG. 1 is a longitudinal sectional view showing the structure of a hydraulic impact mechanism which is an embodiment of this invention, and FIG. 2 is an enlarged sectional view of the vicinity of the valve chamber. In the figure, 1 is a cylinder, 2 is a piston, 3 is a front hydraulic chamber, 4 is a rear hydraulic chamber, 5 is a switching valve, 6 is a high pressure circuit, 10 is a low pressure circuit, 12 is a valve plug, 1
7 is a valve chamber, 23 is a valve control liquid chamber, 25 is a valve regulation liquid chamber, and 28 and 36 are control ports.
Claims (1)
摺嵌して前部液圧室と後部液圧室とを形成し、前
記シリンダにバルブプラグを嵌着して、バルブプ
ラグ外周とシリンダ内周との間に、円筒状の切換
弁をピストンと同心状に摺嵌する弁室を形成し、
該弁室の前端部及び後端部を常時低圧回路と連通
させ、切換弁で前記液圧室の何れか一方の液圧を
高圧と低圧とに切換えてピストンを往復動させる
液圧式打撃装置において、前記切換弁を常時一方
に付勢する弁規制液室と、ピストンの往復動によ
つて開閉される制御ポートに連通して切換弁を移
動させる弁制御液室とを設けたことを特徴とする
液圧式打撃装置の切換弁制御機構。 A piston having small diameter portions at the front and rear is slid into the cylinder to form a front hydraulic chamber and a rear hydraulic chamber, and a valve plug is fitted into the cylinder to form a connection between the outer periphery of the valve plug and the inner periphery of the cylinder. In between, a valve chamber is formed into which a cylindrical switching valve is slidably fitted concentrically with the piston.
A hydraulic impact device in which the front and rear ends of the valve chamber are always communicated with a low pressure circuit, and a switching valve switches the hydraulic pressure of either one of the hydraulic pressure chambers between high pressure and low pressure to reciprocate the piston. , comprising a valve regulating fluid chamber that always biases the switching valve in one direction, and a valve controlling fluid chamber that moves the switching valve by communicating with a control port that is opened and closed by reciprocating movement of a piston. A switching valve control mechanism for a hydraulic impact device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5294785U JPH0224623Y2 (en) | 1985-04-10 | 1985-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5294785U JPH0224623Y2 (en) | 1985-04-10 | 1985-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61169587U true JPS61169587U (en) | 1986-10-21 |
| JPH0224623Y2 JPH0224623Y2 (en) | 1990-07-05 |
Family
ID=30573353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5294785U Expired JPH0224623Y2 (en) | 1985-04-10 | 1985-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0224623Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015115106A1 (en) | 2014-01-31 | 2015-08-06 | 古河ロックドリル株式会社 | Hydraulic hammering device |
-
1985
- 1985-04-10 JP JP5294785U patent/JPH0224623Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015115106A1 (en) | 2014-01-31 | 2015-08-06 | 古河ロックドリル株式会社 | Hydraulic hammering device |
| US10493610B2 (en) | 2014-01-31 | 2019-12-03 | Furukawa Rock Drill Co., Ltd. | Hydraulic hammering device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0224623Y2 (en) | 1990-07-05 |